Home / 146,013.90-218,583.45-86,819.10

Finding the Fourth Proportional to 146,013.90, 218,583.45 and 86,819.10

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Solution

The fourth proportional to 146,013.90, 218,583.45 and 86,819.10 is: 129,968.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,013.90 : 218,583.45 = 86,819.10 : x
  2. Step 2: Convert to fraction form
    146,013.90/218,583.45 = 86,819.10/x
  3. Step 3: Cross multiply
    146,013.90x = 218,583.45 × 86,819.10
  4. Step 4: Simplify right side
    146,013.90x = 18,977,218,403.90
  5. Step 5: Solve for x
    x = 18,977,218,403.90/146,013.90
  6. Step 6: Final answer
    x = 129,968.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.